如何在 Python 中修改 datetime.datetime.hour？
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How to modify datetime.datetime.hour in Python?
提问by Mars Lee
I want to calculate the seconds between now and tomorrow 12:00. So I need to get tomorrow 12:00 datetimeobject.
我想计算从现在到明天 12:00 之间的秒数。所以我需要得到明天 12:00 的datetime对象。
This is pseudo code:
这是伪代码：
today_time = datetime.datetime.now()
tomorrow = today_time + datetime.timedelta(days = 1)
tomorrow.hour = 12
result = (tomorrow-today_time).total_seconds()
But it will raise this error:
但它会引发这个错误：
AttributeError: attribute 'hour' of 'datetime.datetime' objects is not writable
How can I modify the hour or how can I get a tomorrow 12:00 datetimeobject?
如何修改小时或如何获得明天 12:00 的datetime对象？
回答by Chris
Use the replacemethodto generate a new datetimeobject based on your existing one:
使用该replace方法datetime根据现有对象生成新对象：
tomorrow = tomorrow.replace(hour=12)
Return a datetime with the same attributes, except for those attributes given new values by whichever keyword arguments are specified. Note that
tzinfo=Nonecan be specified to create a naive datetime from an aware datetime with no conversion of date and time data.
返回具有相同属性的日期时间，除了那些由指定的关键字参数赋予新值的属性。请注意，
tzinfo=None可以指定从已知日期时间创建一个简单的日期时间，而无需转换日期和时间数据。
回答by Selcuk
Try this:
尝试这个：
tomorrow = datetime.datetime(tomorrow.year, tomorrow.month, tomorrow.day, 12, 0, 0)
